http://www.amazon.com/Universal-Polymer-Clamp-On-Bipod/dp/B003E7NH5Q/ref=pd_rhf_ee_s_cp_3_K9DA?ie=UTF8&refRID=0V2CTZ76V6JDRWD3701S
this looks simple and it's cheap. do you think it would adversely affect accuracy by clamping directly on the barrel?